<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <title>Graph 3D demo</title>

    <style>
        body {font: 10pt arial;}
    </style>

    <script type="text/javascript" src="http://www.google.com/jsapi"></script>
    <script type="text/javascript" src="../graph3d.js"></script>

    <script type="text/javascript">
        var data = null;
        var graph = null;

        google.load("visualization", "1");

        // Set callback to run when API is loaded
        google.setOnLoadCallback(drawVisualization);

        function custom(x, y) {
            return Math.sin(x/50) * Math.cos(y/50) * 50 + 50;
        }

        // Called when the Visualization API is loaded.
        function drawVisualization() {
            // Create and populate a data table.
            data = new google.visualization.DataTable();
            data.addColumn('number', 'x');
            data.addColumn('number', 'y');
            data.addColumn('number', 'value');

            // create some nice looking data with sin/cos
            var steps = 25;  // number of datapoints will be steps*steps
            var axisMax = 314;
            axisStep = axisMax / steps;
            for (var x = 0; x < axisMax; x+=axisStep) {
                for (var y = 0; y < axisMax; y+=axisStep) {
                    var value = custom(x,y);
                    data.addRow([x, y, value]);
                }
            }

            // specify options
            options = {width:  "400px",
                height: "400px",
                style: "surface",
                showPerspective: true,
                showGrid: true,
                showShadow: false,
                keepAspectRatio: true,
                verticalRatio: 0.5
            };

            // Instantiate our graph object.
            graph = new links.Graph3d(document.getElementById('mygraph'));

            // Draw our graph with the created data and options
            graph.draw(data, options);
        }
    </script>
</head>

<body>
<div id="mygraph"></div>
</body>
</html>
